弧线的绘制和编辑

使用AMap.BezierCurve和AMap.BezierEditor插件绘制和编辑弧线

源代码编辑器

<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
    <style>
    html,
    body,
    #container {
      width: 100%;
      height: 100%;
    }
    </style>
    <title>弧线的绘制和编辑</title>
    <link rel="stylesheet" href="https://a.amap.com/jsapi_demos/static/demo-center/css/demo-center.css" />
    <script src="https://webapi.amap.com/maps?v=2.0&key=您申请的key值&plugin=AMap.BezierCurveEditor"></script>
    <script src="https://a.amap.com/jsapi_demos/static/demo-center/js/demoutils.js"></script>
</head>
<body>
<div id="container"></div>
<div class="input-card" style="width: 120px">
   <button class="btn" onclick="bezierCurveEditor.open()" style="margin-bottom: 5px">开始编辑</button> 
   <button class="btn" onclick="bezierCurveEditor.close()">结束编辑</button> 
</div>
<script type="text/javascript">
    var map = new AMap.Map("container", {
        center: [ 116.397637, 39.900001 ],
        zoom: 14
    });

    var path = [//每个弧线段有两种描述方式
        [116.37, 39.91],//起点
        //第一段弧线
        [116.380298, 39.907771, 116.38, 39.90],//控制点，途经点
        //第二段弧线
        [116.385298, 39.907771, 116.40, 39.90],//控制点，途经点//弧线段有两种描述方式1
        //第三段弧线
        [//弧线段有两种描述方式2
          [116.392872, 39.887391],//控制点
          [116.40772, 39.909252],//控制点
          [116.41, 39.89]//途经点
        ],
        //第四段弧线
        [116.423857, 39.889498, 116.422312, 39.899639, 116.425273, 39.902273]
        //控制点，控制点，途经点，每段最多两个控制点
    ];

    var bezierCurve = new AMap.BezierCurve({
        path: path,
        isOutline: true,
        outlineColor: '#ffeeff',
        borderWeight: 3,
        strokeColor: "#3366FF", 
        strokeOpacity: 1,
        strokeWeight: 6,
        // 线样式还支持 'dashed'
        strokeStyle: "solid",
        // strokeStyle是dashed时有效
        strokeDasharray: [10, 10],
        lineJoin: 'round',
        lineCap: 'round',
        zIndex: 50,
    })

    map.add(bezierCurve);
    // 缩放地图到合适的视野级别
    map.setFitView([ bezierCurve ])

    var bezierCurveEditor = new AMap.BezierCurveEditor(map, bezierCurve)

    bezierCurveEditor.on('addnode', function(event) {
        log.info('触发事件：addnode')
    })

    bezierCurveEditor.on('adjust', function(event) {
        log.info('触发事件：adjust')
    })

    bezierCurveEditor.on('removenode', function(event) {
        log.info('触发事件：removenode')
    })

    bezierCurveEditor.on('end', function(event) {
        log.info('触发事件： end')
        // event.target 即编辑后的曲线对象
    })
</script>
</body>
</html>

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